When two boats share the same hull type — in this case both the Polar Kraft 164 SC 2009 and the Polar Kraft 186 SC 2009 are modified vee designs with aluminum construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

On paper these two are close siblings in the size department — Polar Kraft 164 SC 2009 at 16,0 ft versus Polar Kraft 186 SC 2009 at 18,0 ft. Weight tells a clearer story for trailering families: the Polar Kraft 186 SC 2009 tips the scales at 1 184 lbs — 406 lbs less than the Polar Kraft 164 SC 2009 at 778 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.

The power gap is worth calling out. Rated to 115 hp, the Polar Kraft 186 SC 2009 has a 40-hp advantage over the Polar Kraft 164 SC 2009's 75-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.

For family outings this is probably the sharpest distinction between the two. The Polar Kraft 186 SC 2009 is rated for 7 passengers, while the Polar Kraft 164 SC 2009 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Polar Kraft 186 SC 2009 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Polar Kraft 186 SC 2009 comes in at 10 lbs per hp versus 10 lbs per hp for the Polar Kraft 164 SC 2009. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.